Production Information
Production Companies
Leningrad Popular Science Film Studio
Production Countries
Soviet Union
Spoken Languages
Russian
Quick Facts
| Original Title | Тайна вещества |
| Release Date | January 1, 1956 |
| Status | Released |
| Language | RU |
Cast
Leonid Khmara
Narrator (voice)
Alexander Mgebrov
(uncredited)
Nikolay Dmitriev
Butlerov (uncredited)
Sergey Evlakhishvili
Pierre Curie (uncredited)
Maryana Safonova
Marie Curie (uncredited)